FLENDER couplings - Siemens / 25 BA 3001 en 06/2012 FLENDER UZWN® overrunning clutches with FLENDER KSUN® clutch shift Types UZWN and KSUN Operating instructions Translation of the

FLENDER couplings

FLENDER UZWN®overrunning clutcheswith FLENDER KSUN®clutch shift

Types UZWN and KSUN

Operating instructionsBA 3001 en 06/2012

2 / 25BA 3001 en 06/2012

FLENDER UZWN®overrunning clutcheswith FLENDER KSUN®clutch shift

Types UZWN and KSUN

Operating instructions

Translation of the original operating instructions

Technical data

Stocking spare parts

Maintenanceand repair

Faults, causesand remedy

Start-upand operation

Fitting

Notes

1

7

6

5

4

3

2

3 / 25BA 3001 en 06/2012

Notes and symbols in these operating instructions

Note: The term "operating instructions" will in the following also be shortened to "instructions" or "manual".

Legal notes

Warning-note concept

This manual comprises notes which must be observed for your personal safety and for preventing material damage.Notes for your personal safety are marked with a warning triangle or an "Ex" symbol (when applyingDirective 94/9/EC), those only for preventing material damage with a "STOP" sign.

WARNING! Imminent explosion!

The notes indicated by this symbol are given to prevent explosion damage.Disregarding these notes may result in serious injury or death.

WARNING! Imminent personal injury!

The notes indicated by this symbol are given to prevent personal injury.Disregarding these notes may result in serious injury or death.

WARNING! Imminent damage to the product!

The notes indicated by this symbol are given to prevent damage to the product.Disregarding these notes may result in material damage.

NOTE!

The notes indicated by this symbol must be treated as general operating information.Disregarding these notes may result in undesirable results or conditions.

WARNING! Hot surfaces!

The notes indicated by this symbol are made to prevent risk of burns due to hot surfacesand must always be observed.Disregarding these notes may result in light or serious injury.

Where there is more than one hazard, the warning note for whichever hazard is the most serious is always used.If in a warning note a warning triangle is used to warn of possible personal injury, a warning of material damage maybe added to the same warning note.

Qualified personnel

The product or system to which these instructions relate may be handled only by persons qualified for the workconcerned and in accordance with the instructions relating to the work concerned, particularly the safety andwarning notes contained in those instructions. Qualified personnel must be specially trained and have theexperience necessary to recognise risks associated with these products or systems and to avoid possible hazards.

4 / 25BA 3001 en 06/2012

Intended use of Siemens products

Observe also the following:

Siemens products must be used only for the applications provided for in the catalogue and the relevanttechnical documentation. If products and components of other makes are used, they must berecommended or approved by Siemens. The faultfree, safe operation of the products calls for propertransport, proper storage, erection, assembly, installation, start­up, operation and maintenance. Thepermissible ambient conditions must be adhered to. Notes in the relevant documentations must beobserved.

Trademarks

All designations indicated with the registered industrial property mark ® are registered trademarks of Siemens AG.Other designations used in these instructions may be trademarks the use of which by third parties for their ownpurposes may infringe holders’ rights.

Exclusion of liability

We have checked the content of the instructions for compliance with the hard­ and software described.Nevertheless, variances may occur, and so we can offer no warranty for complete agreement. The informationgiven in these instructions is regularly checked, and any necessary corrections are included in subsequent editions.

Note on the EC Machinery Directive 2006/42/EC

Siemens couplings in the "FLENDER couplings" product range must be treated as "components" in the senseof the EC Machinery Directive 2006/42/EC.Therefore, Siemens needs not issue a declaration of incorporation.Information on safe fitting, safe startup and safe operation can be found in this instructions manual; in additionthe "warning­note concept" therein must be observed.

5 / 25BA 3001 en 06/2012

Contents

1. Technical data 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.1 Torques, speeds, geometric data and weights 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.1.1 Sizes 325 / 450 / 560 / 660 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.1.2 Sizes 330 / 460 / 610 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.2 General description of the UZWN overrunning clutch 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.3 General description of the KSUN clutch shift 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2. Notes 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.1 Safety instructions and general notes 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3. Fitting 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.1 Notes to the fit pairs of the bore and shaft 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.2 Fitting the UZWN overrunning clutch 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.2.1 Fitting the UZWN overrunning clutch, sizes 325 / 450 / 560 / 660 13. . . . . . . . . . . . . . . . . . . . . . . . . . .

3.2.2 Fitting the UZWN overrunning clutch, sizes 330 / 460 / 610 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3 Possible misalignments 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3.1 Axial misalignment 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3.2 Angular misalignment 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3.3 Radial misalignment 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.4 Alignment 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.5 Shaft­misalignment values during operation 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.6 Fitting the KSUN clutch shift 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.7 Assignment of tightening torques 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4. Start­up and operation 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5. Faults, causes and remedy 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5.1 Possible cause of the fault 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5.2 Incorrect use 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5.2.1 Frequent faults when selecting the overrunning clutch and/or the size of the overrunning clutch 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5.2.2 Frequent faults when fitting the overrunning clutch 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5.2.3 Frequent faults in maintenance 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6. Maintenance and repair 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6.1 Maintenance interval 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6.1.1 UZWN overrunning clutch 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6.1.2 KSUN clutch shift 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6.2 Replacement of the bellows (50) 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6.3 Demounting the KSUN clutch shift 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6.4 Demounting the UZWN overrunning clutch, sizes 325 / 450 / 560 / 660 21. . . . . . . . . . . . . . . . . . . . . .

6.5 Demounting the UZWN overrunning clutch, sizes 330 / 460 / 610 21. . . . . . . . . . . . . . . . . . . . . . . . . . .

7. Stocking spare parts 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7.1 Spare parts 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6 / 25BA 3001 en 06/2012

1. Technical data

The instructions describe the overrunning clutch with clutch shift in horizontal mounting position withshaft­hub connection by cylindrical bore with parallel key. Where other shaft­hub connections are to beused (e.g. conical bores with parallel key, shrink fit or splines to standard "DIN 5480") Siemens should beconsulted.

If a dimensioned drawing has been made out for the clutch, the data in this drawing must be given priority.The dimensioned drawing including any other documents should be made available to the user of thesystem.

Part numbers and part designations can be found in the spare­parts drawing and spare­parts list insection 7 or on the dimensioned drawing.

1.1 Torques, speeds, geometric data and weights

1.1.1 Sizes 325 / 450 / 560 / 660

2)

1)

E S2

U

NL1 NL2

∅D

1

∅N

D1

∅D

A

∅D

2

∅N

D2

1 23 C

W

v vv vS

X

3) 4)

Fig. 1: UZWN overrunniung clutch, sizes 325 / 450 / 560 / 660

1) Left­hand version, counter­clockwise

2) Right­hand version, clockwise

3) Drive side

4) Output side

Table 1: Speeds, geometric data and weights of the UZWN overrunning clutch,Sizes 325 / 450 / 560 / 660

Output Input Bore 1) Stroke Weight

Size nmax. D1 D2 ND1 ND2 U WNL1NL2

v S S2 E X C m

DA from-to 2)

1/min mm mm mm mm mm mm mm mm mm mm mm mm mm kg

325.1325.2

2900 150060‐10060‐110

80‐12580‐145

178200220

155195

145185

170210

5570

50

5

80 35 8.096

115

450.1450.2

2100 110080‐15090‐160

100‐170100‐200

240275300

190230

180220

210250

7080

60 106 45 9.0224239

560.1560.2

1700 85090‐180

100‐190125‐200140‐225

320300340

270320

260310

300350

100120

70 133 55 9.5435495

660.1660.2

1400 750150‐230160‐240

140‐225170‐250

425340380

280340

270330

320380

110120

80 145 65 9.5735850

1) Maximum bore with keyway to standard "DIN 6885/1"

2) Weights are valid for maximum bores.

7 / 25BA 3001 en 06/2012

1)

L1

25

F1

77

h

H

G2

O P

G1

F2

F3

S

2)

g3

3)

X

4)

B1

X

Fig. 2: KSUN clutch shift, sizes 325 / 450 / 560 / 660, manually operated with blocking

1) Shift position DISENGAGED

2) Shift position ENGAGED

3) Fastening of the base plate

4) Blocking optionally at right­hand or left­hand side

Table 2: Geometrical data and weights of the KSUN clutch shift, sizes 325 / 450 / 560 / 660

SizeB1 L1 h H F1 F2 F3 O P G1 G2 g3 S Weight

mm mm mm mm mm mm mm mm mm mm mm mm for kg

325 475 276 240 750 90 42 200 - 69.5390470

398478

90130

M16 58

450 550 270 320 880 160 69.5 210 13 69.5480560

490570

104144

M20 60

560 680 280 400 1000 180 70 210 35.5 70670770

680780

169219

M20 70

660 740 290 650 1330 160 79.5 300 32.4 79.5720840

730850

175235

M20 90

8 / 25BA 3001 en 06/2012

1.1.2 Sizes 330 / 460 / 610

2)

1)

E

S2

U

NL1 NL2∅

D1

∅N

D1

∅D

A

∅D

2

∅N

D2

1 23

W

X

v v

S

3) 4)

Fig. 3: UZWN overrunniung clutch, sizes 330 / 460 / 610

1) Left­hand version, counter­clockwise

2) Right­hand version, clockwise

3) Drive side

4) Output side

Table 3: Speeds, geometric data and weights of the UZWN overrunning clutch,sizes 330 / 460 / 610

Output Input Bore 1) 2) 3) Stroke Weight

Size n max.. D1 D2 ND1 ND2 U W NL1 NL2 v S S2 E X m

DA from-to min. min. min. 4)

1/min mm mm mm mm mm mm mm mm mm mm mm mm mm kg

330 2900 1500 60‐160 80‐200 210 300 195 100 210 170 55 40 5 127 37 96

460 2100 1100 80‐270 100‐280 320 420 213 170 250 250 80 50 5 136.5 55 287

610 1500 800 100‐360 120‐370 420 560 250 250 350 350 120 60 5 156.5 65 765

1) Maximum bore with keyway to standard "DIN 6885/1"

2) Minimum dimension NL1, hub extension up to 2 x NL1 possible

3) Minimum dimension E, extension depends on NL1

4) Weights are valid for maximum bores at minimum dimension NL1

9 / 25BA 3001 en 06/2012

1)

B1

L1

25

F1

77

h

H

O P

G1

F2

F3

S

2)

g3

3)

X

4)

X

Fig. 4: KSUN clutch shift, sizes 330 / 460 / 610, manually operated with blocking

1) Shift position DISENGAGED

2) Shift position ENGAGED

3) Fastening of the base plate

4) Blocking optionally at right-hand or left-hand side

Instead of manually operated the clutch shift can also be operated pneumatically, see manual BA 3001.1.

Table 4: Geometrical data and weights of the KSUN clutch shift,sizes 330 / 460 / 610

SizeB1 L1 h H F1 F2 F3 O min. P G1 min. g3 S Weight

mm mm mm mm mm mm mm mm mm mm mm for kg

330 475 276 240 750 90 42 200 33 69.5 420 83 M16 58

460 680 280 400 1000 180 70 210 35.5 70 600 114 M20 70

610 740 290 650 1330 160 80 300 33 79.5 760 193.5 M20 90

10 / 25BA 3001 en 06/2012

1.2 General description of the UZWN overrunning clutch

101

1)

2)

1 51 50 52 8 7 3 11 210 5 6 201

101 50 52 300 3 11 10 5 13 12 6 21 20151

Fig. 5: UZWN overrunning clutch

1) Sizes 325 / 450 / 560 / 660

2) Sizes 330 / 460 / 610

The type UZWN overrunning clutch is a directionally actuated freewheel clutch. Clutch part 1 is fitted onthe motor or a driving gear­unit shaft. The clutch part 2 is fitted on the driven­machine shaft or drivengear­unit shaft.

The overrunning clutch is engaged in the stationary condition by shifting the clutch part 3 axially. As soonas the speed of clutch part 2 is higher than that of clutch part 3, independent disengagement caused bythe angled faces of the engaging dogs on clutch part 2 and part 3 takes place. Motor and driven machineunit are then disengaged mechanically.

The overrunning clutch is suitable only for horizontal arrangement.

Engage clutch part 3 only when it is in the stationary condition.

The overrunning clutch may be optionally constructed as a left­hand version for counter­clockwise rotationor as a right­hand version for clockwise rotation, seen from the driving shaft end (clutch part 3).

11 / 25BA 3001 en 06/2012

1.3 General description of the KSUN clutch shift

3 2 5 1

17

15

X

6

11

10

8

13

12

14

18

2040

19

16

15

41 42 7

X

Fig. 6: KSUN clutch shift, manually operated with blocking

The KSUN clutch shift is suitable for attachment to and operation of the UZWN overrunning clutch.

The shifting fork (1) engages in the groove around clutch part 3 by the cam rollers (19) and shifts the UZWNoverrunning clutch.

The shift fork (1) can be manually operated by means of the shift lever (5).

The shift position of the UZWN overrunning clutch is identified by proximity indicators. The signals can betransmitted to a control system.

The clutch shift must be actuated only while the machine is at a standstill.Attention! Danger of squeezing.

When the UZWN overrunning clutch overruns, clutch part 3 is pushed back. The clutch shift moves intothe "disengaged" position in jerks.

During overrun disengagement is jerky.Attention! There is a risk of injury through the movement of the clutch shift.

The clutch shift is retained by means of the locking piece (15) until manual engaging.

The UZWN overrunning clutch must not be held in an engaged position against axialforces, e.g. from the work process.

12 / 25BA 3001 en 06/2012

2. Notes

2.1 Safety instructions and general notes

All persons involved in the installation, operation, maintenance and repair of theoverrunning clutch or the clutch shift must have read and understood theseinstructions and must comply with them at all times. Disregarding these instructionsmay cause damage to the product and material and/or injury to persons. Damagecaused by disregard of these instructions will result in exclusion of liability.

During transport, installation, dismantling, operation and maintenance of the unit, the relevant safety andenvironmental regulations must be complied with at all times.

Lifting gears and load equipment for handling the unit must be suitable for the weightof the overrunning clutch or clutch shift.

Dispose of the overrunning clutch or clutch shift in accordance with national regulations or separate themfor recycling.

The overrunning clutch and clutch shift must be stored in a dry environment. Adequate preservation mustbe carried out.

Operators and users must not make any changes to the overrunning clutch or clutch shift themselves overand above the action specified in these instructions.

If there is any visible damage the overrunning clutch or clutch shift must not be fittedand not be put into operation.

The overrunning clutch or clutch shift must not be operated unless housed in a suitable enclosure inaccordance with the standards applying. This also applies to test runs and when checking the directionof rotation.

All work on the overrunning clutch or clutch shift must be carried out only when it is at a standstill. Securethe drive unit to prevent unintentional switch­on! A notice should be attached to the ON switch statingclearly that work on the overrunning clutch or clutch shift is in progress.

In addition to any generally prescribed personal safety equipment (such as safety shoes, safety clothing,helmet) handling the overrunning clutch or clutch shift requires wearing suitable safety gloves andsuitable safety glasses.

Only spare parts made by the manufacturer Siemens must be used.

Any enquiries should be addressed to:

Siemens AGSchlavenhorst 10046395 Bocholt

Tel.: +49 (0)2871 / 92-0Fax: +49 (0)2871 / 92-2596

13 / 25BA 3001 en 06/2012

3. Fitting

The clutch parts are supplied in finished condition in accordance with the order.

A set screw to standard "DIN 916" with cup point must be used when securing the clutch parts. If the clutchpart fitted on the shaft does not lie up against the shaft shoulder, we recommend using grooved spacerrings.

The overrunning clutches are balanced to the customer's specifications.

3.1 Notes to the fit pairs of the bore and shaft

Check the fits of the bores and the shafts.

Table 5: Fit recommendation for bores with parallel­key connection

Description

Push fit Press fit Interference fit

not suitable for reversing operationsuitable for reversing

operation

Shaft tolerance j6 h6 h6 k6 m6 n6 h6

Bore tolerance H7 J7 K7 H7 H7 H7 M7

The fit assignment m6 / H7 is particularly suitable for many applications.

Failure to observe these instructions may result in breakage of the overrunning clutch.Danger to life from flying fragments.

3.2 Fitting the UZWN overrunning clutch

3.2.1 Fitting the UZWN overrunning clutch, sizes 325 / 450 / 560 / 660

The subassembly clutch part 1 (1; 3; 5; 6; 7; 8; 10; 11; 50; 51; 52) is delivered in pre­assembled condition.

Unscrew the set screw.

Clean the bores and shaft ends.

The bellows (50) must not come into contact with solvents and cleaning agents.

Insert parallel keys in the shaft ends.

Undo the screw connection (51; 52) on the subassembly clutch part 1 (1; 3; 5; 6; 7; 8; 10; 11; 50; 51; 52)and demount the bellows (50).

Undo cheese head screws (11) and demount dust protection (10).

Push bellows (50) onto shaft.

Coat the bores of the coupling parts (1; 2) and the shafts with MoS2 mounting paste(e.g. Microgleit LP 405).

Mount clutch part 1 and clutch part 2, heat up to maximum 150 °C, if necessary.

Axial securing is effected by means of the set screw. Clutch part 3 must be shifted on clutch part 1 in orderto enable the set screw to be tightened.

Fit the set screw (for tightening torque of the set screw see table 8).

Failure to observe these instructions may result in breakage of the coupling.Danger to life from flying fragments.

With bolts (51) fasten the bellows (50) to clutch part 1 and with bolts (52) to clutch part 3.

14 / 25BA 3001 en 06/2012

With cheese­head screw (6) fasten stop (5) (for tightening torques, see table 7).

With cheese­head screws (11) screw dust protection (10) to clutch part 3 (for tightening torques, seetable 7).

Align the clutch as described in item 3.3.

3.2.2 Fitting the UZWN overrunning clutch, sizes 330 / 460 / 610

Unscrew the set screw.

Clean the bores and shaft ends.

The bellows (50) and the dust protection (10) must not come into contact with solventsand cleaning agents.

Design the parallel­key connection with an additional safety factor of 1.3 of the requiredminimum safety. Manfacture the parallel key using a hardened or very strong material. Connectthe parallel key to the machine shaft using retaining screws, in order to ensure the correctposition of the parallel key in the shaft keyway.

Insert parallel keys into the shaft ends and bolt on.

Coat the bores of the clutch parts (1; 2) and shafts with MoS2 mounting paste (e. g. Microgleit LP 405).

Mount clutch part 1 and clutch part 2, heat up to maximum + 150 °C, if necessary.

Axial securing is effected by means of the set screw.

Fit the set screw (for tightening torque of the set screw, see table 8).

Push bellows (50) with hose clip (51) onto clutch part 1 and fit.

Oil the bore in clutch part 3 (oil viscosity VG32) and pull on the shaft.

With cheese­head screw (12) fasten stop (5) (for tightening torques, see table 7).

With cheese­head screws (52) fasten the bellows (50) to clutch part 3.

With cheese­head screws (11) fasten the dust protection (10) to clutch part 3 and with bolts (12) and thesleeves (13) fitted behind the plate fasten to stop (5) (for tightening torques see table 7).

Align the clutch as described in item 3.4.

15 / 25BA 3001 en 06/2012

3.3 Possible misalignments

S2min. S2min.

S2max.

.

S2max.

.

1) 2) 3)

ΔK

w

ΔK

r

Fig. 7: Possible misalignments

1) Axial misalignment (ΔKa)

2) Angular misalignment (ΔKw)

3) Radial misalignment (ΔKr)

3.3.1 Axial misalignment

The gap dimension ΔKa should be set within the deviation permitted for the dimension "S2" (see table 6).

3.3.2 Angular misalignment

The angular misalignment ΔKw can be measured as difference of the gap dimension(ΔS2 = S2max. – S2min.) ΔS2perm. see table 6.

If required, the permissible angular misalignment ΔKw can be calculated as follows:

ΔKwperm. in RAD = ΔS2perm. / DA ΔS2perm. see table 6.

ΔKwperm. in DEGREE = (ΔS2perm. / DA) x (180 / π) "DA" in mm, see section 1.

3.3.3 Radial misalignment

The permissible radial misalignment ΔKrperm. can be found in table 6.

3.4 Alignment

When aligning, the angular and radial misalignment should be kept as low as possible.

Misalignment values specified in table 6 are maximum permissible overall values in operation, resultingfrom mispositioning through imprecision during alignment and misalignment through operation(e.g. deformation through load, heat expansion).

Reduced misalignment in the clutch minimises expected wear on the flexible elements. Misalignment inthe clutch gives rise to restorative forces which may impose inadmissible stress on adjacent machine parts(e.g. bearings).

16 / 25BA 3001 en 06/2012

3.5 Shaft­misalignment values during operation

The following maximum permissible misalignment values must by no means be exceededduring operation.When aligning, the angular and radial misalignment should be kept as low as possible.

Table 6: Shaft­misalignment values ΔSperm. and ΔKrperm., maximum permissible during operation

Axial misalignment Angular misalignment Radial misalignment

Size ΔKa ΔKwperm ΔKrperm

S2 S2max.. – S2min.

mm mm mm

325.1325.2330

4 ... 6 0.15 0.15

450.1450.2460

4 ... 6 0.20 0.20

560.1560.2

4 ... 6 0.25 0.25

610660.1660.2

4 ... 6 0.30 0.30

3.6 Fitting the KSUN clutch shift

Using lifting gear transport the clutch shift by the eye bolts (9).

Mount the clutch shift after fitting and aligning the overrunning clutch.

Demount the shift fork (1) by removing the retaining pins (11) and locking rings (10).

The base plate (7) can then be bolted to the foundation.

Remove eye bolts (9).

Use quality 8.8 screws or higher for fastening.

Fit the shift fork (1) with the retaining pins (11) and the locking rings (10) so that the cam rollers (16) engagein the groove running around clutch part 3.

Align the base plate to ensure that the two cam rollers (16) are in even contact with the side of the grooveand both bearings act at an axial height at more or less the same depth in the groove.

Mark the position of the locking piece (15) on the shift fork (1) for the shift ”DISENGAGED” position andat this point drill a hole with diameter d = 12 mm.

Check that the locking piece (15) locks in correctly.

Check tightening torques against item 3.7 and, if necessary, retighten the bolts.

17 / 25BA 3001 en 06/2012

Fit the B20 and B40 proximity indicators, as described.

Gap dimension between proximity indicator and UZWN overrunning clutch = 3 ± 0.5 mm.

Engage and disengage the UZWN overrunning clutch manually and signals.

Signals B20 and B40 must not be given at the same time.

3

3 ±

0.5

2)

1

2

1)

1

2

Fig. 8: Fitting the proximity indicators

1) UZWN overrunning clutch, shift position ”DESENGAGED”

2) UZWN overrunning clutch, shift position "ENGAGED”

1 B20 proximity indicator2 B40 proximity indicator

3 Eye bolt, Part no. 9

The control system of the main drive must be connected to the proximity indicators ofthe clutch shift.

While the main drive is running, no attempt must be made to switch the auxiliary driveon.

The proximity indicators are designed by Messrs. TURCK in PNP design, NO contact.

18 / 25BA 3001 en 06/2012

3.7 Assignment of tightening torques

The use of impact screwdrivers is not permissible.

Tightening torques apply to bolts with untreated surfaces which are not or only lightly oiled (coefficient offriction μ = 0.14). The use of lubricant paint or lubricant which affects the coefficient of friction "μ" is notpermitted.

The specified tightening torques "TA" must be complied with, applying standard "DIN 25202 / 1992-04",Screw­Connection Class "C", with an output­torque scatter of ± 5 %.

Tighten hexagon­head bolt (12) for fastening the sliding bearings (14) to 25 Nm and secure medium­firmlywith LOCTITE.

Table 7: Tightening torques of nuts and bolts

Size M 6 M 8 M 10 M 12 M 16 M 20 M 24 M 30

Tightening torque TAin Nm

10 25 49 86 210 410 710 1450

Table 8: Tightening torques of the set screws

Bore range Set-screw size Tightening torque

over up to TA

mm mm Nm

38 65 M 10 15

65 95 M 12 25

95 110 M 16 70

110 150 M 20 130

150 230 M 24 230

230 600 M 30 470

4. Start­up and operation

Check bolt­tightening torques for the overrunning clutch and tightening torques forthe foundation bolts of the coupled machine before start­up. Check the position andoperation of the proximity indicators to determine the shift position. Enclosures(coupling protection, contact prevention at least IP2X) must be fitted.Overload conditions during start­up cannot be excluded. If the overrunning clutchbreaks through overload, metal parts may fly off and cause personal injury and/ormaterial damage.

Follow the following switching­on procedure for start­up and subsequent operation.

Manual operation of the clutch shift

• Main motor "OFF"Shift position ”DISENGAGED”UZWN overrunning clutch is disengaged, the proximity indicator has gives signal B20.

• Shift KSUN clutch shift mechanically and adjust UZWN overrunning clutch.

• If signal B40 is given, start auxiliary drive, then enable main drive.

• If signal B40 is not given, start auxiliary drive briefly and once more try to adjust KSUN clutch shift.

The overrunning clutch must run with little noise and without vibration. Irregular behaviour must be treatedas a fault requiring immediate remedy. In case of fault the drive must be stopped at once. The necessarymeasures for repair must be taken in accordance with the safety regulations applying.

19 / 25BA 3001 en 06/2012

5. Faults, causes and remedy

Table 9: Faults, dangers and measures

Faults Dangers Measures

Changes in running noise;Vibrations

Failure of the plant.

Trouble-shooting in accordancewith item 5.1 and item 5.2 andremedy the cause.

Check all parts of the coupling forany damage.

Replace damaged parts.

For re-assembly, the instructionsin sections 3 and 4 must be obser­ved.

Sliding surfaces contaminated.

5.1 Possible cause of the fault

Change in alignment:

─ Rectify the cause of the change in alignment (e.g. loose foundation bolts).

─ Align the overrunning clutch.

─ Check axial fastening; adjust as necessary.

Sliding surfaces contaminated:

─ Clean, check and, if necessary, replace clutch parts and shift components.

5.2 Incorrect use

Failure to observe these instructions may result in breakage of the overrunning clutch.Danger to life from flying fragments.

5.2.1 Frequent faults when selecting the overrunning clutch and/or the size of the overrunning clutch

• Important information for describing the drive and the environment are not communicated.

• System torque too high.

• System speed too high.

• Application factor not correctly selected.

• Chemically aggressive environment is not taken into consideration.

• The ambient temperature is not permissible.

• Finished bore with inadmissible diameter and/or inadmissible fit assignment.

• Machining of parallel keyways of which the width across corners is greater than the width acrosscorners of the parallel keyways to standard "DIN 6885/1" with a maximum permissible bore.

• The transmission capacity of the shaft­hub connection is not appropriate to the operating conditions.

• Maximum load or overload conditions are not being taken into consideration.

• Dynamic load conditions are not being taken into consideration.

• Shaft­hub connection resulting in impermissible material stress on the overrunning clutch.

• Operating conditions are being changed without authorisation.

20 / 25BA 3001 en 06/2012

5.2.2 Frequent faults when fitting the overrunning clutch

• Components with transport or other damage are being fitted.

• The shaft diameter is beyond the specified tolerance range.

• Coupling parts are being interchanged, i. e. their assignment to the specified shaft is incorrect.

• Specified axial fastenings are not fitted.

• Specified tightening torques are not being adhered to.

• Bolts are inserted dry or greased.

• Flange surfaces of screwed connections have not been cleaned.

• Alignment and/or shaft­misalignment values do not match the specifications in the instructions manual.

• The coupled machines are not correctly fastened to the foundation, and as a result shifting of themachines e.g. through loosening of the foundation­screw connection is causing excessivedisplacement of the coupling parts.

• The coupled machines are not sufficiently earthed.

• The coupling guard used is not suitable.

5.2.3 Frequent faults in maintenance

• Maintenance intervals are not being adhered to.

• No genuine spare parts are being used.

• Old or damaged spare parts are being used.

• Leakage in the vicinity of the overrunning clutch is not being identified and as a result chemicallyaggressive media are damaging the overrunning clutch.

• Fault indications (noise, vibrations, etc.) are not being observed.

• Specified tightening torques are not being adhered to.

• Alignment and/or shaft­misalignment values do not match the specifications in the instructions manual.

6. Maintenance and repair

6.1 Maintenance interval

6.1.1 UZWN overrunning clutch

• Check tightness and porosity of the bellows (50) regularly, at least once yearly.

• Oil sizes 330 / 460 / 610 regularly, at least once yearly, via grease nipple (300) with VG 32 oil.

• Clean the track of the KSUN clutch shift cam rollers (16) regularly, at least once yearly, with a cleaningcloth.

• Slightly grease the sliding surfaces of clutch parts 1 (1) and 3 (3) with a bruch. For this work, the clutchmust be switched off.

6.1.2 KSUN clutch shift

• Clean the cam rollers regularly, at least once yearly, with a cleaning cloth.

• Regularly, at least once yearly, grease the cam rollers via grease nipples.

21 / 25BA 3001 en 06/2012

6.2 Replacement of the bellows (50)

Replacing the bellows is only possible after complete demounting of the clutch (see item 6.4 or item 6.5).

6.3 Demounting the KSUN clutch shift

Remove locking rings (10) and locking pins (11).

Remove the shift lever (1).

6.4 Demounting the UZWN overrunning clutch, sizes 325 / 450 / 560 / 660

Move the coupled machines apart.

Undo screws (51; 52) and slide the bellows (50) onto the shaft.

Undo cheese­head screws (11) and remove the dust protection (10).

Undo cheese­head screws (6) and remove the stop (5).

Remove clutch part 3.

Remove set screw. Mount a suitable detaching device. Using a burner, heat coupling part (1; 2) along itslength and above the parallel keyway (max. + 80 °C).

Pull the clutch part off. Examine the hub bore and the shaft for damage, and protect against rust. Replacedamaged parts.

For re­assembly, the instructions in sections 3 and 4 must be observed.

6.5 Demounting the UZWN overrunning clutch, sizes 330 / 460 / 610

Move the coupled machines apart.

Undo screws (51; 52) and slide the bellows (50) onto the shaft.

Undo cheese­head screws (11; 12) and remove the dust protection (10) and bushes (13).

Undo hexagon­head screw (6) and remove the stop (5).

Remove clutch part 3.

Remove set screw. Mount a suitable detaching device. Using a burner, heat coupling part (1; 2) along itslength and above the parallel keyway (max. + 80 °C).

Pull the clutch part off. Examine the hub bore and the shaft for damage, and protect against rust. Replacedamaged parts.

For re­assembly, the instructions in sections 3 and 4 must be observed.

22 / 25BA 3001 en 06/2012

7. Stocking spare parts

7.1 Spare parts

For ordering spare parts state the following data, as far as possible:

• Siemens order number and position

• Siemens drawing number

• Type and size of the overrunning clutch

• Part numer (see spare­parts list)

• Bore, bore tolerance, keyway and balancing as well as particular characteristics.

• Special details such as temperature, electrically insulating.

101 1 51 50 52 8 7 3 11 10 5 6 201 2

Fig. 9: Spare­parts drawing UZWN overrunning clutch, sizes 325 / 450 / 560 / 660

Table 10: Spare­parts list UZWN overrunning clutch, sizes 325 / 450 / 560 / 660

Partnum.

DesignationPartnum.

DesignationPartnum.

Designation

1 Clutch part 1 7 Parallel key 51 Hexagon-head bolt

2 Clutch part 2 8 Cheese-head bolt 52 Hexagon-head bolt

3 Clutch part 3 10 Dust protection 101 Set screw

5 Stop 11 Cheese-head bolt 201 Set screw

6 Cheese-head bolt 50 Bellows

23 / 25BA 3001 en 06/2012

101 1 51 50 52 300 133 11 10 5 6 201 212

Fig. 10: Spare­parts drawing UZWN overrunning clutch, sizes 330 / 460 / 610

Table 11: Spare­parts list UZWN overrunning clutch, sizes 330 / 460 / 610

Partnum.

DesignationPartnum.

DesignationPartnum.

Designation

1 Clutch part 1 10 Dust protection 51 Hose clip

2 Clutch part 2 11 Cheese-head bolt 52 Cheese-head bolt

3 Clutch part 3 12 Cheese-head bolt 201 Set screw

5 Stop 13 Bush 300 Grease nipple

6 Hexagon-head bolt 50 Bellows 101 Set screw

24 / 25BA 3001 en 06/2012

3 2 5 1

17

X

6

11

10

8

13

12

14

18

2040

19

16

15

41 42 7

X

Fig. 11: Spare parts drawing KSUN clutch shift, manually operated with blocking

Table 12: Spare­parts list KSUN clutch shift, manually operated with blocking

Partnum.

DesignationPartnum.

DesignationPartnum.

Designation

1 Shift fork 10 Locking ring 18 Cheese-head bolt 2)

2 Hexagon-head bolt 11 Locking pin 19 Washer

3 Hexagon nut 12 Hexagon-head bolt 20 Proximity indicator 1)

5 Hand lever 13 Washer 40 Proximity indicator 1)

6 Adaptor plate 14 Sliding bearing 41 Holder

7 Base plate 15 Locking piece 2) 42 Hexagon-head bolt

8 Pedestal bearing 16 Cam roller

9 Eye bolt 1) 17 Holder 2)

1) The position of the eye bolt is shown in figure 8.

2) only on version with locking piece

Siemens AGIndustry SectorMechanical DrivesAlfred-Flender-Straße 7746395 BocholtGERMANY

www.siemens.com/drive­technologies

Subject to modifications

© Siemens AG 2012

Further Information:

"FLENDER gear units" on the Internetwww.siemens.com/gearunits

"FLENDER couplings" on the Internetwww.siemens.com/couplings

Service & Support:http://support.automation.siemens.com/WW/view/en/10803928/133300

Lubricants:http://support.automation.siemens.com/WW/view/en/42961591/133000